The app's popularity grew during the pandemic, when it became the leading download in Europe, South America and the US, the report said on Monday.
Chat and communications platform Discord has benefited from people's need to isolate during the pandemic. It is popular among gamers for chatting when online and has been funded by Sony Group.
At the start of 2021, WhatsApp announced that it would share messaging data with Facebook relating to interactions between users and companies. Although WhatsApp promised to protect information about communications between friends and family, some users moved over to other apps.
Bucking that trend, Telegram, a messaging app originally developed in Russia but now based in Germany, moved up to seventh place. The report mentioned that Telegram has also been driven up by the Covid-19 pandemic.
China's Likee, a TikTok competitor, that many companies use for marketing has ranked eighth in the latest global download league.